A novel multi-state bogie system reliability evaluation approach by extended d-MC model for high-speed trains  

作　　者：Yong Fu Ruoqu Liu Jisheng Dai Wenlong Zhu Xin Liu Yong Qin 

机构地区：[1]Zhuzhou CRRC Times Electric Co.,Ltd.,Times Road,Shifeng District,Zhuzhou,Hunan 412001,China [2]Department of Statistics,University of Warwick,Coventry CV47AL,United Kingdom [3]State Key Lab of Rail Traffic Control&Safety,Beijing Jiaotong University,Haidian District,Beijing 100044,China

出　　处：《Transportation Safety and Environment》2024年第3期35-46,共12页交通安全与环境（英文）

基　　金：funded by the Hunan Science and Technology‘Lotus Bud’Talent Support Program(Grant No.2022TJ-XH-009).

摘　　要：Bogie is a pivotal system and plays a critical part in the safety and reliability management of high-speed rail.However,the available bogie system reliability analysis methods lack the consideration of multi-state characteristics,and the common multi-state reliability analysis methods,being an NP-hard problem,lead to low efficiency.In order to overcome these drawbacks,this paper proposes a novel multi-state rail train bogie system reliability analysis approach based on the extended d-MC model.Three different function interactions within the bogie system are considered to build the multi-state bogie system flow network model.Meanwhile,an extended d-MC model is established to remove unnecessary d-MC candidates and duplicates,which greatly enhances the computing efficiency.The bogie system reliability is calculated,and examples are provided.Numerical experiments are carried out for the different operational conditions of the bogie system and are used to test the practicability of the method proposed in this article;it is found that this method outperforms a newly developed method in solving multi-state reliability problems.

关 键 词：MULTI-STATE system reliability BOGIE flow network extended d-MC model 

分 类 号：U270.33[机械工程—车辆工程]